/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package ru.miit.elearning.vtutor.servlets;

import java.io.IOException;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import ru.miit.elearning.vtutor.data.DataMiner;

/**
 *
 * @author Cyclone
 */
public class ManageLabsServlet extends HttpServlet {

    /** 
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        //PrintWriter out = response.getWriter();

        DataMiner miner = null;

        try {
            int courseId = Integer.parseInt(request.getParameter("courseId"));
            int labNumber = Integer.parseInt(request.getParameter("labNumber"));

            String act = request.getParameter("act");
            if (act != null && act.length() > 0) {
                miner = new DataMiner();
                if (act.equals("addLab")) {
                    miner.addLab(courseId, labNumber);
                } else {
                    if (act.equals("deleteLab")) {
                        miner.deleteLab(courseId, labNumber);
                    }
                }
            }

        } catch (Exception e) {
            Logger.getLogger(ManageLabsServlet.class.getName()).log(Level.SEVERE, null, e);
            e.printStackTrace();

            response.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
        } finally {
            if (miner != null) {
                miner.close();
            }
//            out.close();
        }
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /** 
     * Handles the HTTP <code>GET</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Handles the HTTP <code>POST</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Returns a short description of the servlet.
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>
}
